CN200975551Y - Gravity valve - Google Patents
Gravity valve Download PDFInfo
- Publication number
- CN200975551Y CN200975551Y CN 200620016375 CN200620016375U CN200975551Y CN 200975551 Y CN200975551 Y CN 200975551Y CN 200620016375 CN200620016375 CN 200620016375 CN 200620016375 U CN200620016375 U CN 200620016375U CN 200975551 Y CN200975551 Y CN 200975551Y
- Authority
- CN
- China
- Prior art keywords
- valve
- housing
- float
- top cover
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005484 gravity Effects 0.000 title abstract description 5
- 239000011324 bead Substances 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 abstract 5
- 230000010485 coping Effects 0.000 abstract 3
- 239000002828 fuel tank Substances 0.000 description 11
- 239000003502 gasoline Substances 0.000 description 7
- 239000000295 fuel oil Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model relates to a gravity valve, consisting of a shell, a coping, a floater and a spring, wherein the shell is composed of a needle metering jet, a housing body, and a lower head, the bottom of the shell is fixedly sealed by the lower head; the coping contains a baffle, a main part and an external connected nozzle; the floater is arranged on the upper midsection with a cone, which form a needle valve together with the needle metering jet in the upper midsection of shell, the floater is arranged on the bottom with a concave part, which is provided with a convex stick inside; a spring sleeve is arranged on the convex stick in the hollow part; the gravity valve contains a access that is provided with a pressure regulating valve and is connected with the inner part with the external connected nozzle in a different passage with the needle metering jet, the pressure regulating valve is arranged on the shell and underneath the coping baffle. The utility model realizes a pressure regulating of the oil tank through adding a pressure regulating valve on the gravity valve, and enables the steam to be discharged from the oil tank through the pressure regulating valve, thereby avoiding distortion of the oil tank caused by larger inner pressure.
Description
Technical field
The utility model relates to a kind of weight valve, the especially a kind of weight valve that can avoid causing because of the tank pressure excessive deformation band tank pressure modulating valve of vehicle blast when inclination of vehicle or overturning.
Background technique
China utility application prospectus CN95226862.0 discloses a kind of weight valve of a kind of integral switch durable test stand, comprise: be located in the petrol tank, communicate with two-way pressure-limit valve by sebific duct, by housing, seal ring, float, spring and bottom are formed, described float is in central authorities in the housing, outside cylindrical, its diameter is less than the housing internal diameter, in its bottom one tubular reentrant part is arranged, draw boss rod downwards from this tubular reentrant part again in order to sheathed spring, this boss rod is shorter in length than the float cylindrical base, central authorities are provided with cone in the float upper end, the metering-orifice of upside central authorities forms needle-valve in it and the housing, described shell upper is rounded, be with seal ring in its outside, be inversed taper platform shape in the outside, its underpart, on inversed taper platform shape housing section, have four vertical passages, two relative passages wherein lead directly to out outside the housing bottom, in addition two relative passages are not then outside the pass-out housing bottom, metering rod jet communicates with the set vapor outlet port in housing top, be provided with the stepped shape bottom that inwardly concaves in lower housing portion, spring and float are held; Between float and the metering rod jet face contact seal, in order to guarantee this sealing, metering rod jet is generally all smaller, thereby steam flow is also little, is unfavorable for the oil vapor emptying with fuel tank the inside, especially under the very full situation of fuel tank, float can be given its buoyancy situation float downward at fuel oil, block metering rod jet, steam can't be discharged, and makes the fuel tank distortion easily.
Summary of the invention
At above-mentioned situation, the utility model purpose promptly is to provide a kind of gasoline vapor can the derivation from fuel tank, avoids the weight valve because of the band tank pressure modulating valve of tank pressure excessive deformation.
Goal of the invention of the present utility model is achieved through the following technical solutions:
The utility model weight valve mainly comprises: housing, top cover, float and spring;
Described housing comprises metering rod jet, housing main body, bottom, and housing bottom is sealed admittedly by described housing bottom;
Described top cover comprises baffle plate, top cover main body and external nozzle;
Described float upper end middle body is provided with cone, it with housing in the metering rod jet of upside central authorities form needle-valve, be provided with reentrant part in the float bottom, this reentrant part is middle to be provided with protruding rod;
Described spring housing is located on the protruding rod in centre of this reentrant part;
Wherein, this weight valve comprises that also connection housing inner chamber and external nozzle are different from the path of metering rod jet position, and this path is provided with pressure regulator valve, and described pressure regulator valve is arranged on the above-mentioned housing, places above-mentioned top cover baffle plate bottom.
Above-mentioned weight valve, wherein: described pressure regulator valve comprises valve box, bead and modulating valve spring, and wherein, described bead and modulating valve spring place this valve box, on the baffle plate of the sheathed top cover of one end of described modulating valve spring, remaining part places valve box to contact with bead.
Above-mentioned weight valve, wherein: described housing is provided with the ball hole, and described bead places this upper end, ball hole.
Above-mentioned weight valve, wherein: described reentrant part is the E shape cylindrical shape reentrant part that Open Side Down.
Above-mentioned weight valve, wherein: described housing and top cover fix as one.
Above-mentioned weight valve, wherein: described float outside is rounded, and its diameter is less than the internal diameter of housing; The height of circular protruding rod is less than the height of reentrant part in the middle of the reentrant part of float.
Above-mentioned weight valve, wherein: described housing and bottom seal in aggregates admittedly.
Above-mentioned weight valve, wherein: described little bulb diameter is less than the internal diameter of housing valve box, and this bead is a solid sphere, and this little ball weight is 4-6g; This little bulb diameter is 4-6mm.
Above-mentioned weight valve, wherein: the height that described bead is in the valve box is 3.2-5.4mm.
The utility model weight valve the utility model is set up pressure regulator valve and is realized adjusting to tank pressure, vehicle is under normal condition, come together to a certain extent, to alleviate the air pressure of fuel tank with metering rod jet as the part of fuel tank discharging oil vapor, especially under the very full situation of fuel tank, float can be given its buoyancy situation float downward at fuel oil, blocks metering rod jet, and steam can be discharged from this pressure regulator valve, avoid fuel tank excessive, cause distortion because of internal pressure.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is a kind of sectional structure schematic representation of existing weight valve;
Fig. 2 is the sectional structure schematic representation of a kind of embodiment of the utility model weight valve;
Fig. 3 is the top cover sectional structure schematic representation of a kind of embodiment of the utility model weight valve;
Fig. 4 is the housing sectional structure schematic representation of a kind of embodiment of the utility model weight valve;
Embodiment
Please consult Fig. 1 together, a kind of existing weight valve is by housing 1, seal ring 2, float 3, spring 4 and bottom 5 are formed, its structure is float and needle valve, central authorities in described float 3 place's housings, outside cylindrical, its diameter is less than the housing internal diameter, one tubular recessed 31 is arranged in the bottom, again from the recessed 31 boss rods 32 of drawing downwards of this tubular in order to sheathed spring 4, this boss rod is shorter in length than the float cylindrical base, be provided with the cone 61 of 40 degree in float 3 cylindrical bodys upper end central authorities, the metering-orifice 62 of upside central authorities forms needle-valves 6 in it and the housing 1, described shell 1 top is cylindrical to be with seal ring 2 in the neutral gear of its two flanks in outside, flank has one to lack empty on it, as shown in Figure 1, the outer casing underpart outside is inversed taper platform shape, on inversed taper platform shape housing parts, have four vertical passages 8, two relative vertical passages wherein lead directly to out outside the housing section, in addition two passages are not then outside the pass-out housing bottom, the cross section of accompanying drawing 1 is just in time by the outer vertical passage of a pair of straight-through housing bottom, therefore, blank position as shown in the figure; Metering rod jet diameter on housing top is the 1.4---1.5 millimeter, and metering-orifice 62 communicates with steam (vapor) outlet 7 on housing top, is provided with the stepped shape bottom 5 that inwardly concaves in lower housing portion, and spring 4 and float 3 are held; When automobile is in normal condition following time, it steams gasoline and extracts from petrol tank, and refuels full or during the automobile overturning, can block gasoline again and flow out from petrol tank when gasoline.For satisfying this two effects, this weight valve is designed to float and needle valve structure, needle-valve is used to cut off gasoline and flows out, when the normal position, float 3 is suspended in the housing 1, supports float 3 from weight certainly with spring 4, when petrol tank is added to certain position, float rises under buoyancy function, and needle-valve 8 cuts off the ventilation energy circuit, prevents that liquid gasoline from flowing out.When overturning reversing, float 3 cuts out under the self gravitation effect, flows out thereby cut off gasoline.
, in this embodiment, describedly mainly comprise: housing 5 ', top cover 1 ', float 8 ' and spring 7 ' to shown in Figure 4 as Fig. 2; Described housing 5 ' comprises metering rod jet 51 ', housing main body 53 ', bottom 6 ', and housing 5 ' bottom is by described housing bottom 6 ' solid envelope;
Described top cover 1 ' comprises baffle plate 11 ', top cover main body 13 ' and external nozzle 12 ', and described top cover 1 ' is fixed on the upper end of housing 5 ';
Described float 8 ' upper end middle body is provided with cone, it with housing in the metering rod jet 51 ' of upside central authorities form needle-valve 6 ', be provided with reentrant part 31 ' in float 8 ' bottom, this reentrant part 31 ' is middle to be provided with protruding excellent 32 ';
Described spring housing is located on the centre protruding excellent 32 ' of this reentrant part 31 ', and reentrant part 31 ' is an E shape cylindrical shape reentrant part 31 ' that Open Side Down;
Wherein, this weight valve comprises that also connection housing 5 ' inner chamber and external nozzle 12 ' are different from the path of metering rod jet, this path is provided with pressure regulator valve 9 ', and described pressure regulator valve 9 ' is arranged on the above-mentioned housing 5 ', places above-mentioned top cover baffle plate 11 ' bottom; Described pressure regulator valve 9 ' comprises valve box 3 ', bead 4 ' and modulating valve spring 2 ', wherein, described bead 4 ' and modulating valve spring 2 ' place this valve box 3 ', on the baffle plate 11 ' of the sheathed top cover 13 ' of one end of described modulating valve spring 2 ', remaining part places valve box 3 ' and bead ' contact; Housing 5 ' is provided with the ball hole ' 52 ', described bead 4 ' are placed on the 52 ' upper end, ball hole of housing; Housing 5 ' fixes as one with top cover 1 '; Float 8 ' is outside rounded, and its diameter is less than the internal diameter of housing 5 '; Circular protruding excellent 32 ' height is less than the height of reentrant part 31 ' in the middle of the reentrant part of float; The stiff coefficient of modulating valve spring 2 ' should be greater than 1.92, and modulating valve spring 2 ' stiff coefficient is 2 in this embodiment, and bead 4 ' is less than the internal diameter of housing 5 ' valve box 3 ', and this bead is a solid sphere, and this bead 4 ' weight range is 4-6g; This bead 4 ' diameter range is 4-6mm, and bead 4 ' diameter is 5mm in this embodiment, and weight is 5g, and ball hole 52 ' diameter is 4.3mm, and the height that bead 4 ' is in the valve box 3 ' is 3.2-5.4mm; Top cover 1 ', housing 5 ', float 8 ', bottom 6 ' are made for the synthetic plastic polyoxymethylene that contains fuel oil resistance in this embodiment, and bead 4 ', modulating valve spring 2 ', spring 7 ' contain the high stainless steel of rustless property and make; The technological process of this embodiment: injection formed top cover 1 ', behind housing 5 ' and the bottom 6 ', earlier bead 4 ' is contained in the valve box 3 ', put spring 2 ' again, locate (spring 2 ' is enclosed within on the outstanding part of baffle plate 11 '), then top cover 1 ' and housing 5 ' are welded together with ultrasonic bonding.
When vehicle is in normal state, under the very large situation of tank pressure, steam can be with bead 4 ' slight jack-up, and bead 4 ' still contacts with valve box 3 '; P represents fuel tank pressure, the area that s bead 4 ' contacts with fuel oil, mg represents bead 4 ' gravity, the angle that on behalf of car, β tilt, k and x represent modulating valve spring 2 ' stiff coefficient and decrement respectively, N represents the holding power of valve box 3 ' to bead 4 ', under ps+N=mg+kx, be in dynamic balancing, vapor permeates part in the fuel tank is gone out, but reconcile the pressure of fuel tank, and when the inclination of vehicle angle surpassed institute's fixed number value, as long as satisfy ps+mgcos β＜kx, fuel oil just can not let out from this place.
The embodiment of the above is a better embodiment of the present utility model; be not to limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence that all shapes according to the utility model, structure are done changes and all comprises in the protection domain of the present utility model.
Claims (6)
1. a weight valve mainly comprises: housing, top cover, float and spring;
Described housing comprises metering rod jet, housing main body, bottom, and housing bottom is sealed admittedly by described housing bottom;
Described top cover comprises baffle plate, top cover main body and external nozzle;
Described float upper end middle body is provided with cone, it with housing in the metering rod jet of upside central authorities form needle-valve, be provided with reentrant part in the float bottom, this reentrant part is middle to be provided with protruding rod;
Described spring housing is located on the protruding rod in centre of this reentrant part;
It is characterized in that: this weight valve comprises that also connection housing inner chamber and external nozzle are different from the path of metering rod jet position, and this path is provided with pressure regulator valve, and described pressure regulator valve is arranged on the above-mentioned housing, places above-mentioned top cover baffle plate bottom.
2. weight valve according to claim 1, it is characterized in that: described pressure regulator valve comprises valve box, bead and modulating valve spring, wherein, described bead and modulating valve spring place this valve box, on the baffle plate of the sheathed top cover of one end of described modulating valve spring, remaining part places valve box to contact with bead.
3. weight valve according to claim 1 and 2 is characterized in that: described housing is provided with the ball hole, and described bead places this upper end, ball hole.
4. weight valve according to claim 3 is characterized in that: described reentrant part is the E shape cylindrical shape reentrant part that Open Side Down.
5. weight valve according to claim 4 is characterized in that: described housing and top cover fix as one.
6. weight valve according to claim 3 is characterized in that: described float outside is rounded, and its diameter is less than the internal diameter of housing; The height of circular protruding rod is less than the height of reentrant part in the middle of the reentrant part of float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016375 CN200975551Y (en) | 2006-12-08 | 2006-12-08 | Gravity valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016375 CN200975551Y (en) | 2006-12-08 | 2006-12-08 | Gravity valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200975551Y true CN200975551Y (en) | 2007-11-14 |
Family
ID=38901836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620016375 Expired - Lifetime CN200975551Y (en) | 2006-12-08 | 2006-12-08 | Gravity valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200975551Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101932471A (en) * | 2008-02-01 | 2010-12-29 | 伊顿公司 | Multi-function control valve for fuel vapor system |
| CN104085628A (en) * | 2014-07-15 | 2014-10-08 | 朱志强 | Hazardous chemical storage tank capable of autonomous risk avoidance |
| CN105864477A (en) * | 2016-05-26 | 2016-08-17 | 李天亮 | Pressure valve for fuel tank |
| CN107244233A (en) * | 2017-06-29 | 2017-10-13 | 安徽江淮汽车集团股份有限公司 | A kind of weight valve leak-proof device and automobile |
| CN110227564A (en) * | 2019-06-17 | 2019-09-13 | 章伟 | Detection system based on microflow control technique |
| CN118623050A (en) * | 2024-08-12 | 2024-09-10 | 比亚迪股份有限公司 | Exhaust valve, fuel tank system and vehicle |
-
2006
- 2006-12-08 CN CN 200620016375 patent/CN200975551Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101932471A (en) * | 2008-02-01 | 2010-12-29 | 伊顿公司 | Multi-function control valve for fuel vapor system |
| CN104085628A (en) * | 2014-07-15 | 2014-10-08 | 朱志强 | Hazardous chemical storage tank capable of autonomous risk avoidance |
| CN105864477A (en) * | 2016-05-26 | 2016-08-17 | 李天亮 | Pressure valve for fuel tank |
| CN105864477B (en) * | 2016-05-26 | 2019-01-22 | 皑壹汽车科技（上海）有限公司 | A kind of pressure valve for fuel tank |
| CN107244233A (en) * | 2017-06-29 | 2017-10-13 | 安徽江淮汽车集团股份有限公司 | A kind of weight valve leak-proof device and automobile |
| CN110227564A (en) * | 2019-06-17 | 2019-09-13 | 章伟 | Detection system based on microflow control technique |
| CN110227564B (en) * | 2019-06-17 | 2021-07-02 | 佛山市麦控智能科技有限公司 | Detection system based on micro-fluidic technology |
| CN118623050A (en) * | 2024-08-12 | 2024-09-10 | 比亚迪股份有限公司 | Exhaust valve, fuel tank system and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200975551Y (en) | Gravity valve | |
| US6145532A (en) | Fuel tank fill level control and vapor venting valve | |
| CN209173436U (en) | A kind of floating ball quantizer | |
| CN201012047Y (en) | Spill-proof water drinking machine and spill-proof water device thereof | |
| CN102297335A (en) | Over-filling prevention device | |
| CN206623676U (en) | Put the loading system of fuel tank in a kind of left and right | |
| CN220582505U (en) | Portable gas-filled stove | |
| CN210495333U (en) | Gas-water separator capable of preventing water from spraying | |
| CN214743359U (en) | Raising structure and valve | |
| CN208670591U (en) | A kind of carbon dioxide fluid reservoir | |
| CN201521786U (en) | Limited filling device and cryogenic container having same | |
| CN212106087U (en) | Fuel pump and vehicle with same | |
| CN201110239Y (en) | Fuel tank gravity valve | |
| US2293473A (en) | Volumetric fluid flow indicator | |
| CN209240871U (en) | A kind of hyposmosis, Multifunctional fuel tank control valve | |
| CN205651962U (en) | Fuel liquid level valve gear | |
| CN205918528U (en) | Novel built -in fuel tank weight valve | |
| CN215831163U (en) | Two-way valve device | |
| CN2649123Y (en) | Oxyhydrogen flame inflating water-sealed flashback preventing device | |
| US687395A (en) | Measuring-faucet. | |
| CN217177570U (en) | Built-in rotary valve | |
| CN2158013Y (en) | Looping float valve | |
| JPH1028801A (en) | Oil-water separator | |
| CN210118472U (en) | Floating threaded connection ball valve | |
| CN102563193A (en) | Automatic water feeding level control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071114 |
|
| EXPY | Termination of patent right or utility model |